Furnace-roof structure



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' Mmm 1,571,561 E. P. STEVENS FURNACE ROOF STRUCTURE' led April 12, 19232 Sheets-Sheet 1 Njw gb,

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y E. P. STEVENS FURNACE, ROOF STRUCTURE Filed April 12, 1923 2Sheets-Sheet 2 'types of furnaces.

Patented Fiel).- 2, 1926.

ENOCE I. STEVENS, 0F CHICAGO, ILLINOIS.; MARY ANN' STEVENSEXECUTRIX 0I'SAID ENOCEI P. STEVENS, DECEASED.`

rUnNAcn-Roor sriwcrumi.`

Applicationl led Apiil 12, 1923. Serial No. 631,650.

To all whom it may concern:

Beit known that I, ENooH P. STEVENS, a citizen of the 'United States,residing at Morgan Park, Chicago, in the county of Cook and StateofIllinois, have invented certain. new and useful Improvements inFurnace-Roof Structures, of which the following is a specification. 1

This invention relatesto roof or top wall constructionsfor furnaces andis primarily useful for the roofs of malleable and similar `One of theprimary objects of my.inven. tion is to provide a very simpleconstruction so arranged that no substantial thrust or pull is impartedon the sidewalls when expansion or contraction Lof the roof occurs.Still another object of the invention is the elimination of theheavybuck stay ysupporting `structure Lfor the furnace side wallseretofore found necessary where the side walls take the thrust of theroof.

More particularly my invention is intended to provide a roofconstruction composed of units or bungs, each including a support-` ingmeans adapted to be carried on the side walls and imposing nosubstantial thrust thereon in expansion or contraction, if any,`,

' and a row ofbricks carried by each sup` porting member with freedomfor expansion and contraction without imposing stress on the sidewalls.The foregoing, together with such othe objects as may heremafter appear,or are incident to my invention, I obtain by means of a constructionwhich I have illustrated in preferred form in the accompanyingfdrawings, wherein: v)

Fig. 1 is a fragmentary longitudinal section through a malleable furnaceillustratingv theA application Vof my improvements thereto. Fig. 2 is asection taken on the line 22 of 3; Fig. 3 is a section taken'on the line3 3 of Fig. 1, on an enlarged scale;v Fig. 4 is a fragmentary planv viewof Fig. 3, on a still further enlarged-scale; and Fig.

5 isa perspective illustrating a detail of the invention., p k

Referring now,4 lto Fig. 1, the malleable furnace A has the usual sidewalls 7 which carry the roof, indicated as a whole by thev referenceletter B. A

This roof is comprised of units orbungs I). Each `of the bungs consistsof a sup# porting member comprising reversely `dis-- posed channels 8,secured together in spaced relation by means of the bolts 9. and thesleeves 10V and provided at the ends with foot members 11 adapted toreston top of the side wall 7, as will be seen on inspection of Fig. 3;thev reinforcing angles 12 secured to the webs of the channels; the rowof bricks 13, provided with T-shaped heads 14, the spacing of thechannels bein such that the bricks may be slipped or t readed in withtheir heads resting upon the lower flanges 15 ofthe channels, as will beclear on inspection" of Fig. 2; and means for yieldingly pressing thefbricks together longitudinally of the row, such means consisting of thepads 16, the pivoted levers 17, the rods 18, and the springs 19, one endof each of which bears on a lever' or arm 17, the amount ofv compressionbeing determined by means of the nuts 20.

The channels 8 are arranged in arched form and. support the bricks in anarch, the radius of which is comparatively small, the row of bricksbeing free to expand and contract while at the same time the load istransmitted to the'side. walls in such. way that there is no `outwardthrustto speak of on expansion of the channels.

It will also be .observed that the ends 'of the row of bricks come abovethe side 'walls which makes it possible toprovide a sand or similar seal21 to protect the metal parts from the` direct heat.

The bungs are lifted by the eyes 22 land the chargingf bungs are tied inpairs by plates'23.

-Tofacilitate the threading f the bricks,- the lower vflanges of thechannels are slotted out at intervals, as at 15', the slits beingslightly longer than the thickness of the bricks.l This arrangement alsofacilitates breaking out of all of the bricks; or of one or more of thebricks which may wea-r out more rapidly, without disturbing all of theremaining bricks.

What I' claim is: .1. In a furnace having side walls, aroof structurecomprising a plurality of removable bungs each including a supportingmember adapted to be carried on the side walls, and a row of brickscarried by' the supporting member with freedoml of expansion andcontraction. l g

l2; In a furnace having side walls,ga roof structure ,comprising aplurality of removable bungs each inclu able bangs each including anarched supporting member adapted to be carried on the side walls, and arow of b ricks arranged in an are and carried by the supporting mem.

' headed bricks and supportingmeans therefor including a pairofreversely dis osed structural members each having a lihnge Vadapted toengage the heads, means for se- Lcuring the structural members togetherand means for yieldingly pressing the bricks together.

5. In a furnace roof structure, a row of headed bricks and` supportingmeans therefor including a pair of reversely dis-- posed structuralmembers each having a flange adapted to engage the headsmeans Aforsecuring the structural members together in spaced relation, and meansfor yieldingly pressing the bricks together.

6. In a. furnace roof-structure, a row of headed bricks and supportingmeans therefor includin a pair of reversely disposed channel mem rs, thelower flanges of which engage the heads, means for securingy thechannels together, and means for yieldingly pressing the brickstogether.

7. In a furnace roof structure, a row of headed bricks and supportingmeans therefor includi a pair of reversely disposed channel mem ers, thelower flan es of which engage the heads, and means or securing thechannels together, together with angles reinforcing the channels.' l

8. In a furnace roof structure. a row of headed bricks and supportingmeans therefor including a pair of reversely disposed channel members,the lower flanges of which engaofe the heads, and means for securing thec annels together, said lower flanges being shaped to permitthreading ofbricks intei-mediate the endsof the channels.

- v9. In a furnace structure, a row of headedv bricks and supportingmeans therefor including structural work with opposing flanges adaptedto engage the brick headsand arranged to permit threadin of the bricksthereinto at a point interme iate the 'ends of the row.

10. A furnace roof bung comprising in combination a supporting member, aplurality of bricks carried thereby with freedomy for expansion, andmeans for yieldingly pressing the bricks together during expansion andcontraction.

In testimony whereof, I have hereunto signed my name.

ENooH r. STEVENS.

